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Finding the Fourth Proportional to 216,340.08, 324,510.38 and 56,415.88

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Solution

The fourth proportional to 216,340.08, 324,510.38 and 56,415.88 is: 84,623.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,340.08 : 324,510.38 = 56,415.88 : x
  2. Step 2: Convert to fraction form
    216,340.08/324,510.38 = 56,415.88/x
  3. Step 3: Cross multiply
    216,340.08x = 324,510.38 × 56,415.88
  4. Step 4: Simplify right side
    216,340.08x = 18,307,538,656.83
  5. Step 5: Solve for x
    x = 18,307,538,656.83/216,340.08
  6. Step 6: Final answer
    x = 84,623.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.